Automatic feeding device



g 1931- L. J. SAUER 1,817,211

AUTOMATIC FEEDING DEVICE Filed Jan. 13, 1930 3 Sh eets-Sheet. l

Aug. 4, 1931. L. J. sAuER 1,817,211

- AUTOMATIC FEEDING DEVICE Filed Jan. 13. 1930 a Sheets-Sheet. 2

Aug. 4, 1931. L. J. SAUER ,2

AUTOMATIC FEEDI NG DEVICE Filed Jan. 13. 1350- 3 Sheets-Sheet, 3

Patented Aug. 4, 1931 UNETED STATES PATENT OFFHCE I LOUIS J. SAUER, OFOAK PARK, ILLINOIS, ASSIGNOR TO CHAR-LES H. JOY, S11, OF

CHICAGO, ILLINOIS AUTOMATIC FEEDING DEVICE Application filed January 13,1930.

My invention relates to automatic feeding devices for duplicatingmachines with especial reference to that class of machines provided witha flat gelatinized printing surface 5 over which a carriage having asuitable platen roller is arranged to travel.

My invention is particularly adapted for use in connection with machinessimilar to that shown and described in my copending application, SerialNumber 349,87 6, in which the paper or suitable card is inserted in thecarriage and the platen roller impresses the original or the copy sheeton the gelatinized printing surface which receives the impression fromthe original sheet and transfers it to the copy sheet.

In positioning the original or copy sheets on the gelatinized surface,it is necessary to provide a suitable margin stop bar in order 26 thatthe paper may be accurately aligned with relation to the platen rollerand the printing surface.

In my invention I have provided a convenient means for accomplishing thedesired results and it has for one of its objects the provision of anautomatically controlled margin bar and paper feeding device, theoperation of which is automatically controlled relative to thedirectional movement of the carriage.

Another object is to provide an automatic paper feed device controlledby the lost motion of the handle operating the carriage.

Another object is the provision of an automatic paper feeding devicecontrolled by the operator through the normal movement of the carriagehandle.

A further object is the provision of an automatically controlled paperguide to guide the paper into printing position on the print ing bedduring the printing movement of the carriage, and to automatically guidethe paper from the printing bed during the reverse movement.

Another object is to provide a completely automatic margin bar, paperfeed and paper guide, all incorporated in the carriage of a duplicatingmachine and automatically operable by the single means operating thecarriage.

Further objects will appear from the de- Serial No. 420,340.

tailed description to follow and from the appended claims.

In the drawings:

Figure l is a side elevation of the carriage and cooperating parts of aduplicating machine embodying my invention, the platen driving spool anda portion of the carriage being broken away to more clearly illustratethe device.

Fig. 2 is a plan view with the handle broken away on a linecorresponding to line 22 of Fig. 1.

Fig. 3 is a perspective view of the margin bar or paper stop and the.paper feed device, the driving means and a portion of the margin barbeing broken away to better illustrate the invention.

Fig. & is a side view of the feeding device as shown in Fig. 3, but inthe horizontal position.

Fig. 5 is a side view of the paper feed device, the feed roller bearingbeing removed.

Fig. 6 is a perspective view of one end of the margin bar or paper stop.

Referring now to the drawings in detail, the construction showncomprises a printing bed 1 having a gelatinized printing surface 9.thereon, and a guide bar 3, supported adjacent the printing bed on whichis slidably mounted the carriage 2 which is arranged to be raised fromthe bed surface by rotation on the shaft 3.

The carriage, in the present device, is preferably in the form of asubstantially rectangular frame work in which is mounted the removableplaten roller in suitable bearings 6 and 7. The bearing 6 comprises thestub shaft 8 on which is mounted the driving spool 9 for driving theplaten roller. (See Fig. 2.) This roller is similar to that in myco-pending application above mentioned, the platen roller being rotatedin the usual manner by means of a single turn of the cable 10 whichengages the flanged spool 9. The squared .portion 11 of the platenroller shaft engages in a suitable opening in the stub shaft 8 forsupporting and driving the platen roller. The opposite end of the rolleris engaged by the tapered pin 12 which is held in engagement by means ofthe spring 18. The

platen roller is easily removable by pulling the frame and provided witha lost motion movement, so that when the carriage is moved to the right,as viewed in Fig. 1, the handle takes the position shown in full linesand when it is moved to the left, takes the position shown by the dottedlines, thus giving a lost motion movement of the handle for eachdirectional movement of the carriage.

The paper table is provided with the ears 17 forming suitable bearingsfor the margin bar control shaft 18 on which is loosely mounted themargin bar 19 by means of suitable ears 20. A paper feed roller 21 isrotatably mounted in suitable hearings in the movable bearing members 22which are pivoted by means of the screws 23to the paper, table ears 17.Springs 24 engage the bearing members 22 tending to hold the feed roller21 in the feeding position indicated in Figs. 1 and 3 in which it issnugly pressed against the pressure roller 25 which is mounted insuitable bearings 26 secured to the paper table. I

The feed roller 21 is driven from the platen roller by means of thepinion 27, the idler gear 28, and the gear 29 on the platen roller stubshaft 8. The idler gear 28 is held in operative relation to the pinion27 and the gear 29 by means of the link 30-pivoted on the shaft 31 ofthe feed roller, the idlor r28 being supported on the link by means of asuitable bearing 32 and held in operative relation to the gear 29 bymeans of the pin 33 in the carriage 4 and the slot 34 in the link. Theslot 34 allows free movement of the feed 1 roller 21 without disturbingthe operative relation of the gears.

The paper stop and feed roller are automatlcally controlled by means ofthe lever 35 whichis secured to the paper stop control shaft 18 andconnected to the handle 15 by means of the link 36.

It is obvious that when the handle is moved to push the carriage to theright, the shaft 18 will be rotated clockwise as viewed in Fig. 1 andwhen the handle is moved to reverse the direction of the movement of thecarriage this shaft 18 will be rotated counter clockwise.

The shaft 18 is provided with the pins 37 for engaging the margin bar 19to hold it in the raised position shown in Figs. 1 and 3, and the pins38 are arranged to engage against the shoulders 39 of the bearingmembers 22 to raise the feed roller 21 against the tension of the spring24 when the handle is moved to the dotted line position. In operatingthe device when the handle is pulled forward to the dotted line positionthe shaft 18 will be rotated to release the margin bar 1.9 which willthen be lowered by its own weight until the ears 4O engage the bearingmembers 26 where it is in a position to engage any paper which may beinserted between the rollers 21 and 25. At the same time the roller 21will be raised to allow the inserting of the paper, the parts thentaking the position shown in Figs. 4 and 5. In this position, the paperis inserted between the rollers and against the margin bar and upon thereverse movement of the carriage the paper will be engaged between thefeed roller 21 and the pressure roller 25 and released by the margin barand allowed to feed beneath the carriage platen roller-. r 7 Y In orderto guide the paper under the platen roller, the curved guide 41 ispivoted on the frame 42 and extends parallel with the roller. -The lever35 is provided with the arm 43 which engages the lever 44 pivoted at 45and which in turn engages the guide 41. It is evident that when thedevice is in the paper feeding position, the guide 41 will be in theposition shown in Fig. 1 and when the handle 15 is moved to the dottedline position. to reverse the direction of-the motion of the carriage,the guide 41 will be raised to the position shown by dotted lines inFig. 1 and the paper will be removed from the printing bed and guided toan easily accessible position betweenthe margin bar and the platenroller where it may be removed from the machine.

It is obvious that various changes may be made in the details of theconstruction shown, without departing from the spirit of the invention.3

Having thus described my invention. what I claim as new and desire tosecure by Letters Patent is: V

1. In a duplicating machine, a carriage mounted to travel back and forthover a printing bed. a platen roller,'a paper table on said carriage,means above the table for controlling the movement of the paper from thetable to the platen roller a movable paper guide for guiding the paperfrom the paper table and under the platen roller when the carriage ismoved in one'direction, and automaticmeans controlling said guidethrough the normal operation of'the carriage to guide the paper awayfrom the papertable and above said controlling means when the directionof movement of the carriage is reversed.

2. In a duplicating machine having a carriage mounted to travel back andforth over a printing bed, an operating handle; on said carriage andhaving a limited lost motion in :the direction of movement of saidcarriage, a

paper table on said carriage a platen roller on said carriage forcooperation with said printing bed, means above said table and connectedwith said handle for automatically delivering paper to said printing bedwhen the carriage is moved in one direction, and means automaticallyadjustable by the operation of said carriage to guide the paper awayfrom said printing bed and above said delivering means when the carriageis moved in the opposite direction.

3. A duplicating machine comprising a carriage mounted to be moved backand forth over a printing bed, an operating handle for said carriagehaving a limited lost mot-ion relative thereto, a paper table on saidcarriage, a platen roller for applying the paper to the printing bed, apair of separable feed rollers adjacent the lower edge of said table forfeeding the paper to the platen roller, means for holding said rollersnormally in effective paper engaging position, and means operable bysaid handle for separating said rollers to ineffective position, saidpositions corresponding respectively to the back and forth movement ofsaid carriage.

4. A duplicating machine comprising a carriage mounted to travel over aprinting bed and having a platen roller cooperative with said bed, apaper table on said carriage, feed rollers adjacent said paper table, acover for said feed rollers comprising a movable paper stop, andautomatically operable means for making said stop and said feed rollersalternately effective relative to the direction of movement of saidcarriage.

5. In a duplicating machine, a carriage mounted to travel over aprinting bed and having a platen roller cooperative with said bed, apaper table on said carriage, a paper feeding device associated withsaid paper table comprising a feed roller, means for driving the feedroller from the platen roller, tensioned means normally holding saidfeed roller in effective position, means comprising a carriage handlehaving a limited lost means for holding the sheet on the support movableto releasing position to permit the sheet to pass underneath the roller,and means for feeding the sheet to the platen roller when the retainingmeans are moved to releasing position, comprising a feed roller engagingthe sheet, said retaining means extending along and above the feedroller and serving to house it.

7. In a duplicating machine, a carriage mounted to travel over aprinting surface, a platen roller mounted on said carriage for pressingthe sheet on the printing surface, a support on which the sheets restprior to passing underneath the roller, retaining means for holding thesheet on the support movable to releasing position to permit the sheetto pass underneath the roller, and means for feeding the sheet to theplaten roller when the retaining means are moved to releasing position,comprising a feed roller engaging the sheet, said retaining meansextending along and above the feed roller and serving to house it, andsaid feed roller being movable into and out of engagement with respectto the sheet.

8. In a duplicating machine, a carriage mounted to travel over aprinting surface, a platen roller mounted on said carriage for pressingthe sheet on the printing surface, a support on which the sheets restprior to passing underneath the roller, retaining means for holding thesheet on the support movable to releasing position to permit the sheetto pass underneath the roller, and means for feeding the sheet to theplaten roller When the retaining means are moved to releasing position,comprising a feed roller engaging the sheet, said retaining meansextending along and above the feed roller and serving to house it, andsaid feed roller being movable into and out of engagement with respectto the sheet, and a handle for moving the carriage and controlling themovement of the feed roller with respect to the sheet.

9. In a duplicating machine, a carriage mounted to travel over aprinting surface. a platen roller mounted on said carriage for pressingthe sheet on the printing surface, a support on which the sheets restprior to passing underneath the roller, retaining means for holding thesheet on the support 1 movable to releasing position to permit the sheetto pass underneath the roller, and means for feeding the sheet to theplaten roller when the retaining means are moved to releasing position,comprising a feed roller engaging the sheet, said retaining meansextending along and above the feed roller and serving to house it, andsaid feed roller being movable into and out of engagement with respectto the sheet, a handle for moving the carriage and controlling themovement of the feed roller, and retaining means with respect to thesheet.

In witness whereof, I have hereunto subscribed my name.

LOUIS J. SAUER.

